Systems and methods for analog to digital conversion with a signal cancellation system of a receiver
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United States of America Patent
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Jan 13, 2009
Grant Date -
Jul 28, 2005
app pub date -
Dec 7, 2004
filing date -
Jan 23, 2004
priority date (Note) -
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Abstract
The present invention provides systems and methods for signal cancellation with a receiver. The receiver comprises a discretizer configured for generating digital signals at different resolutions from a received analog signal. Processing fingers of the receiver generate spreading codes from at least one of the digital signals while a Coded Signal Processing Engine (“CSPE”) substantially cancels interference from at least another one of the digital signals. The spreading codes are transferred to the CSPE where they may be used to construct an interference matrix. One or more cancellation operators may be generated and subsequently applied to the digital signal(s) input to the CSPE to substantially cancel the interference therefrom. The CSPE may adjust the number of bits of the substantially interference cancelled signal(s) to meet a requisite bit width or dynamic range of the receiver. The substantially cancelled signal(s) is then transferred to the processing fingers for further processing.
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